CN103489406A - Pixel drive unit, drive method thereof and pixel circuit - Google Patents
Pixel drive unit, drive method thereof and pixel circuit Download PDFInfo
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- CN103489406A CN103489406A CN201310464199.9A CN201310464199A CN103489406A CN 103489406 A CN103489406 A CN 103489406A CN 201310464199 A CN201310464199 A CN 201310464199A CN 103489406 A CN103489406 A CN 103489406A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
Abstract
The invention relates to the technical field of displaying, in particular to a pixel drive unit, a drive method of the pixel drive unit and a pixel circuit. According to the pixel drive unit, a capacitor cell is additionally arranged at the position before an anode electrode, to which a signal source voltage wire is connected, of each lighting-emitting device, anode electrode potentials input to the light-emitting devices can be different according to different organic electroluminescence materials and structures, unnecessary power dissipation is reduced, and under the same luminance state, the overall power dissipation of a panel is greatly reduced due to the fact that a signal source potential is relatively low.
Description
Technical field
The present invention relates to the display technique field, relate in particular to a kind of pixel drive unit and driving method thereof, image element circuit.
Background technology
The active matrix organic light-emitting diode of estimated current type (Active Matrix Organic Light Emitting Diode, be abbreviated as AMOLED) display device, its panel power consumption is main relevant with the electric current of the Organic Light Emitting Diode (Organic Light-Emitting Diode, be abbreviated as OLED) of flowing through with the signal source voltage line output of IC signal.Wherein, under certain brightness, the size of current of the Organic Light Emitting Diode of flowing through is mainly relevant to device architecture by electroluminescent organic material, can be improved by electroluminescent organic material and device architecture optimization, thereby reduce AMOLED display panel power consumption.In currently available technology, major part is to adopt these class methods to carry out the panel power-dissipation-reduced.
Also have by reducing the signal source voltage line simultaneously and reduce signal source voltage line size to the mode of Organic Light Emitting Diode path resistor, realize the display panel power-dissipation-reduced.
In the design of active matrix organic light emitting diode display part, cathode terminal and the anode tap of all pixels interconnect respectively now, and the anode tap current potential of all pixels is identical, and all pixel cathode terminal signals are identical; Just only export an anode signal and a cathode signal just can from the output terminal of IC driving circuit like this.In traditional structure, directly, by anode signal and the cathode signal of IC output, be directly inputted on pixel electrode.By reducing the mode of signal source voltage line to the Organic Light Emitting Diode path resistor, reduce signal source voltage line size, be very limited relatively.
Therefore, for above deficiency, the invention provides and a kind ofly can reduce to the full extent the signal source voltage line and then realize the pixel drive unit of display panel power-dissipation-reduced and driving method, image element circuit.
Summary of the invention
(1) technical matters that will solve
The technical problem to be solved in the present invention solves the existing high problem of active matrix organic light-emitting diode display panel power consumption.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of pixel drive unit, comprise a plurality of pixel driver subelements and luminescent device, described each pixel driver subelement comprises building-out capacitor and switching transistor, and described building-out capacitor is charged for driving luminescent device under switching transistor is controlled.
Further, the first end of described building-out capacitor is connected with the signal source voltage line, and the second end is connected with the drain electrode of described switching transistor and the anode tap of luminescent device, and the source electrode of switching transistor is connected with reference voltage line, and grid is connected with scan signal line.
Further, described switching transistor is p type field effect transistor or n type field effect transistor.
Further, described luminescent device is organic electroluminescent LED.
The embodiment of the present invention also provides a kind of driving method of above-mentioned pixel drive unit, comprising:
Reseting stage, signal source voltage line output electronegative potential, reference voltage line output noble potential; Scan signal line is opened described switching transistor, makes reference voltage line be loaded on the second end of building-out capacitor with reference to current potential;
Glow phase, signal source voltage line output noble potential, reference voltage line output electronegative potential; Scan signal line is closed described switching transistor, and the signal source voltage line is loaded on operating potential the first end of building-out capacitor; Building-out capacitor discharges the anode tap of electric charge to described luminescent device, makes described luminescent device luminous.
Further, described driving method comprises a plurality of reseting stages and a plurality of glow phase, and described reseting stage and glow phase hocket.
Further, described driving method can only include a reseting stage.
Further, described switching transistor is p type field effect transistor; At reseting stage, described scan signal line output electronegative potential, in order to open described switching transistor; In glow phase, described scan signal line output noble potential, in order to cut out described switching transistor.
Further, described switching transistor is n type field effect transistor; At reseting stage, described scan signal line output noble potential, in order to open described switching transistor; In glow phase, described scan signal line output electronegative potential, in order to close described switching transistor.
The embodiment of the present invention also provides a kind of image element circuit, comprises the described pixel drive unit of above-mentioned any one, also comprises time-sequence control module, and described time-sequence control module connects described scan signal line, for the automatic sequential switching controls of each described scan signal line.
(3) beneficial effect
Technique scheme of the present invention has following advantage: before the present invention is input to the anode tap of each luminescent device at the signal source voltage line, be provided with a capacitor cell, realized being input to the difference of the anode tap current potential of luminescent device according to electroluminescent organic material and structure, and obtain different anode tap current potentials, reduce unnecessary power consumption penalty, under identical luminance, because the signal source current potential is relatively low, make the panel overall power significantly reduce simultaneously.
The accompanying drawing explanation
Fig. 1 is the circuit connection diagram of embodiment of the present invention pixel drive unit;
Fig. 2 is the sequential control schematic diagram of the embodiment of the present invention one pixel drive unit driving method;
Fig. 3 is the sequential control schematic diagram of the embodiment of the present invention two pixel drive unit driving methods;
Fig. 4 is the sequential control schematic diagram of the embodiment of the present invention three pixel drive unit driving methods;
Fig. 5 is the sequential control schematic diagram of the embodiment of the present invention four pixel drive unit driving methods.
In figure, VDD: signal source voltage line; Vref: reference voltage line; T-con: time-sequence control module; Switch R: the first scan signal line; Switch G: the second scan signal line; Switch B: the 3rd scan signal line; C1: the first building-out capacitor; C2: the second building-out capacitor; C3: the 3rd building-out capacitor; R1: the first luminescent device; R2: the second luminescent device; R3: the 3rd luminescent device; M1: the first switching transistor; M2: second switch transistor; M3: the 3rd switching transistor; T1: reseting stage; T2: glow phase.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for the present invention is described, but are not used for limiting the scope of the invention.
The invention provides a kind of pixel drive unit, comprise a plurality of pixel driver subelements and luminescent device, described each pixel driver subelement comprises building-out capacitor and switching transistor, and described building-out capacitor is charged for driving luminescent device under switching transistor is controlled.
Concrete, described pixel driver subelement comprises building-out capacitor and switching transistor, the first end of described building-out capacitor is connected with the signal source voltage line, the second end is connected with the drain electrode of described switching transistor and the anode tap of luminescent device, the source electrode of switching transistor is connected with reference voltage line, and grid is connected with scan signal line.
It should be noted that, pixel drive unit shown in figure comprises three pixel driver subelements, be respectively used to red sub-pixel, the driving of green sub-pixels and blue subpixels, for the dot structure of other structures, pixel drive unit can also be for a plurality of certainly, as comprise four pixel driver subelements, be respectively used to red sub-pixel, driving of green sub-pixels, blue subpixels and yellow sub-pixel etc., the present invention does not do restriction.
As shown in Figure 1, described the first pixel driver subelement comprises the first building-out capacitor C1 and the first switching transistor M1, the first end of described the first building-out capacitor C1 (i.e. the upper end of the first building-out capacitor C1 as shown in the figure) is connected with signal source voltage line VDD, the second end (i.e. the lower end of the first building-out capacitor C1 as shown in the figure) and described the first switching transistor M1 drain electrode (i.e. the right-hand member of the first switching transistor M1 as shown in the figure) and the anode tap of the first luminescent device R1 are connected, the source electrode of the first switching transistor M1 (i.e. the left end of the first switching transistor M1 as shown in the figure) is connected with reference voltage line reference voltage line Vref, the grid of the first switching transistor M1 (i.e. the lower end of the first switching transistor M1 as shown in the figure) is connected with the first scan signal line Switch R,
Described the second pixel driver subelement comprises the second building-out capacitor C2 and second switch transistor M2, the first end of described the second building-out capacitor C2 (i.e. the upper end of the second building-out capacitor C2 as shown in the figure) is connected with signal source voltage line VDD, the second end (i.e. the lower end of the second building-out capacitor C2 as shown in the figure) and described second switch transistor M2 drain electrode (i.e. the right-hand member of second switch transistor M2 as shown in the figure) and the anode tap of the second luminescent device R2 are connected, the source electrode of second switch transistor M2 (i.e. the left end of second switch transistor M2 as shown in the figure) is connected with reference voltage line reference voltage line Vref, the grid of second switch transistor M2 (i.e. the lower end of second switch transistor M2 as shown in the figure) is connected with the second scan signal line Switch G,
Described the 3rd pixel driver subelement comprises the 3rd building-out capacitor C3 and the 3rd switching transistor M3, the first end of described the 3rd building-out capacitor C3 (i.e. the upper end of the 3rd building-out capacitor C3 as shown in the figure) is connected with signal source voltage line VDD, the second end (i.e. the lower end of the 3rd building-out capacitor C3 as shown in the figure) and described the 3rd switching transistor M3 drain electrode (i.e. the right-hand member of the 3rd switching transistor M3 as shown in the figure) and the anode tap of the 3rd luminescent device R3 are connected, the source electrode of the 3rd switching transistor M3 (i.e. the lower end of the 3rd switching transistor M3 as shown in the figure) is connected with reference voltage line reference voltage line Vref, the grid of the 3rd switching transistor M3 (i.e. the lower end of the 3rd switching transistor M3 as shown in the figure) is connected with the 3rd scan signal line Switch B.
Wherein, described the first luminescent device R1, the second luminescent device R2 and the 3rd luminescent device R3 are organic electroluminescent LED.Described the first scan signal line Switch R, the second scan signal line Switch G and the 3rd scan signal line Switch B unlatching and closure for controlling the first switching transistor M1, second switch transistor M2 and the 3rd switching transistor M3.
The first switching transistor M1, second switch transistor M2 in pixel drive unit of the present invention and the 3rd switching transistor M3 can be p type field effect transistor or n type field effect transistor.It should be noted that, common described switching transistor is with organic electroluminescent LED display panel gate driver circuit and drive other transistor types of luminescent device identical, can simplify manufacture craft like this, certainly, the type of described switching transistor also can be different, and these the present invention do not do restriction.
The present invention also provides a kind of driving method of pixel drive unit, and embodiment mono-and embodiment bis-be take the switching transistor that forms pixel drive unit and be p type field effect transistor and introduce the driving method of the pixel drive unit of the embodiment of the present invention as example.
Before the embodiment of the present invention is input to the anode tap of each luminescent device at the signal source voltage line, set up a capacitor cell, realized being input to the difference of the anode tap current potential of luminescent device according to electroluminescent organic material and structure, and obtain different anode tap current potentials, reduce unnecessary power consumption penalty, under identical luminance, because the signal source current potential is relatively low, make the panel overall power significantly reduce simultaneously.
Embodiment mono-
As shown in Figure 2, the driving method of the pixel drive unit that the embodiment of the present invention provides, in this driving method, include a plurality of reseting stages and a plurality of glow phase, and described reseting stage and glow phase hocket, and wherein reseting stage is T1, and glow phase is T2.
At reseting stage T1, signal source voltage line VDD is low-voltage signal, and the first scan signal line Switch R, the second scan signal line Switch G, the 3rd scan signal line Switch B are the low-pressure opening signal.Shown in figure 1, reference voltage line Vref charges to the first building-out capacitor C1 by the first switching transistor M1, by second switch transistor M2, the second building-out capacitor C2 is charged, and by the 3rd switching transistor M3, the 3rd building-out capacitor C3 is charged.
Be in particular, this sequential was all resetted to the first building-out capacitor C1, the second building-out capacitor C2 and the 3rd building-out capacitor C3 before every hardwood image.At reseting stage, signal source voltage line VDD is low-voltage signal, the first scan signal line Switch R, the second scan signal line Switch G, the 3rd scan signal line Switch B are the low-pressure opening signal simultaneously, reference voltage line Vref is high potential signal (Vgh), makes the second terminal potential of the first building-out capacitor C1, the second building-out capacitor C2 and the 3rd building-out capacitor C3 be filled with the Vgh current potential, due to electroluminescent organic material and device architecture to the first luminescent device R1, the luminescence efficiency of the second luminescent device R2 and the 3rd luminescent device R3 is different, desired the first luminescent device R1, the voltage difference at the second luminescent device R2 and the 3rd luminescent device R3 two ends is also different, so just, can be by adjusting the first luminescent device R1, corresponding the first scan signal line Switch R of the second luminescent device R2 and the 3rd luminescent device R3, the current potential size of the second scan signal line Switch G and the 3rd scan signal line Switch B, make to control the first luminescent device R1, the first switching transistor M1 of the second luminescent device R2 and the 3rd luminescent device R3, second switch transistor M2 and the 3rd switching transistor M3 are when writing reference voltage Vgh, realize different charge rates, realize at the first building-out capacitor C1, the different current potential of the second end of the second building-out capacitor C2 and the 3rd building-out capacitor C3.At the first building-out capacitor C1, the first end of the second building-out capacitor C2 and the 3rd building-out capacitor C3, now the low-potential signal of signal source voltage line VDD is Vgl, the capacitance charge total amount that now writes the first luminescent device R1 is (Vgh_R-Vgl) * C1, the capacitance charge total amount that writes the second luminescent device R2 is (Vgh_G-Vgl) * C2, the capacitance charge total amount that writes the 3rd luminescent device R3 is (Vgh_B-Vgl) * C3, the high potential signal that wherein Vgh_R is the first luminescent device R1, the high potential signal that Vgh_G is the second luminescent device R2, the high potential signal that Vgh_B is the 3rd luminescent device R3.
After reseting stage T1 finishes, glow phase T2 is identical with the normal demonstration stage, signal source voltage line VDD is high-voltage signal, time-sequence control module T-con controls the first scan signal line Switch R, the second scan signal line Switch G and the 3rd scan signal line Switch B close respectively the first switching transistor M1, second switch transistor M2 and the 3rd switching transistor M3, the first building-out capacitor C1 electric discharge drives the first luminescent device R1 luminous, the second building-out capacitor C2 electric discharge drives the second luminescent device R2 luminous, the 3rd building-out capacitor C3 electric discharge drives the 3rd luminescent device R3 luminous.
Particularly, as shown in Figure 2, at glow phase T2, signal source voltage line VDD becomes noble potential (Vgh), the first scan signal line Switch R now, the second scan signal line SwitchG and the 3rd scan signal line Switch B are in the noble potential stage, make the first switching transistor M1, second switch transistor M2 and the 3rd switching transistor M3 close, now, signal source voltage line VDD is loaded into the first building-out capacitor C1 by operating voltage noble potential Vgh, the first end of the second building-out capacitor C2 and the 3rd building-out capacitor C3, according to the capacitance charge invariance principle, the current potential of first building-out capacitor C1 the second end that now the first luminescent device R1 is corresponding is Vgh+Vgh_R-Vgl, the current potential of second building-out capacitor C2 the second end that the second luminescent device R2 is corresponding is Vgh+Vgh_G-Vgl, the current potential of the 3rd building-out capacitor C3 the second end that the 3rd luminescent device R3 is corresponding is Vgh+Vgh_B-Vgl, realize being input to thus the first luminescent device R1, the anode tap current potential of the second luminescent device R2 and the 3rd luminescent device R3 is according to the first luminescent device R1, the material of the second luminescent device R2 and the 3rd luminescent device R3 and the difference of structure, and obtain different anode tap current potentials, reduce unnecessary power consumption penalty, simultaneously under identical luminance, because the signal source current potential is relatively low, make the panel overall power significantly reduce.
When next hardwood image is shown, repeat equally above-mentioned reseting stage T1 and glow phase T2.
Embodiment bis-
As shown in Figure 3, the technology contents that the driving method of the pixel drive unit in the present embodiment is identical with embodiment mono-is not repeated in this description, the disclosed content of embodiment mono-also belongs to the disclosed content of the present embodiment two, the present embodiment two is with the difference of embodiment mono-: reset and only occur in the first two field picture reseting stage T1 before, only when start the first two field picture, carrying out electric capacity resets, make like this display frame more steady between every hardwood image, not there will be Flicker etc. to show bad.
Following examples three and embodiment tetra-be take the switching transistor that forms pixel drive unit and are n type field effect transistor and introduce the driving method of embodiment of the present invention pixel drive unit as example.
Before the embodiment of the present invention is input to the anode tap of each luminescent device at the signal source voltage line, set up a capacitor cell, realized being input to the difference of the anode tap current potential of luminescent device according to electroluminescent organic material and structure, and obtain different anode tap current potentials, reduce unnecessary power consumption penalty, under identical luminance, because the signal source current potential is relatively low, make the panel overall power significantly reduce simultaneously.
Embodiment tri-
As shown in Figure 4, the technology contents that pixel drive unit driving method in the present embodiment is identical with embodiment mono-is not repeated in this description, the disclosed content of embodiment mono-also belongs to the disclosed content of the present embodiment, the difference of the present embodiment and embodiment mono-is: at reseting stage T1, the first scan signal line Switch R, the second scan signal line Switch G and the 3rd scan signal line Switch B are noble potential, make the first switching transistor M1 of N-type, second switch transistor M2 and the 3rd switching transistor M3 open, reference voltage line Vref charges to the first building-out capacitor C1 by the first switching transistor M1, by second switch transistor M2, the second building-out capacitor C2 is charged, by the 3rd switching transistor M3, the 3rd building-out capacitor C3 is charged.
After reseting stage T1 finishes, glow phase T2 is identical with the normal demonstration stage, the first scan signal line Switch R, the second scan signal line Switch G and the 3rd scan signal line Switch B are electronegative potential, make the first switching transistor M1, second switch transistor M2 and the 3rd switching transistor M3 close, according to the capacitance charge invariance principle, the current potential of first building-out capacitor C1 the second end that now the first luminescent device R1 is corresponding is Vgh+Vgh_R-Vgl, the current potential of second building-out capacitor C2 the second end that the second luminescent device R2 is corresponding is Vgh+Vgh_G-Vgl, the current potential of the 3rd building-out capacitor C3 the second end that the 3rd luminescent device R3 is corresponding is Vgh+Vgh_B-Vgl, realize being input to thus the first luminescent device R1, the anode tap current potential of the second luminescent device R2 and the 3rd luminescent device R3 is according to the first luminescent device R1, the material of the second luminescent device R2 and the 3rd luminescent device R3 and the difference of structure, and obtain different anode tap current potentials, reduce unnecessary power consumption penalty, simultaneously under identical luminance, because the signal source current potential is relatively low, make the panel overall power significantly reduce.
When next hardwood image is shown, repeat equally above-mentioned reseting stage T1 and glow phase T2.
Embodiment tetra-
As shown in Figure 5, the technology contents that pixel drive unit driving method in the present embodiment four is identical with embodiment tri-is not repeated in this description, the disclosed content of embodiment tri-also belongs to the disclosed content of the present embodiment four, the present embodiment and embodiment tri-differences are: reset and only occur in the first two field picture reseting stage T1 before, only when start the first two field picture, carrying out electric capacity resets, make like this display frame more steady between every hardwood image, not there will be Flicker etc. to show bad.
Embodiment five
The present embodiment five provides a kind of image element circuit, comprise a plurality of pixel drive unit, described pixel drive unit can be any in above-described embodiment, and identical technology contents is not repeated in this description, and the disclosed content of above-described embodiment also belongs to the disclosed content of the present embodiment five.
The image element circuit of the present embodiment five also comprises time-sequence control module T-con, this time-sequence control module T-con connects the first scan signal line Switch R, the second scan signal line Switch G and the 3rd scan signal line Switch B, for the automatic sequential switching controls of the first scan signal line Switch R, the second scan signal line Switch G and the 3rd scan signal line Switch B.
The embodiment of the present invention also provides a kind of Organic Light Emitting Diode backboard, uses the described pixel drive unit of above-described embodiment, driving method and image element circuit, and luminescent device wherein is organic electroluminescent LED.
In sum, the embodiment of the present invention is by before being input to the anode tap of each luminescent device at the signal source voltage line, be provided with a capacitor cell, realized being input to the difference of the anode tap current potential of luminescent device according to electroluminescent organic material and structure, and obtain different anode tap current potentials, reduce unnecessary power consumption penalty, simultaneously under identical luminance, because the signal source current potential is relatively low, make the panel overall power significantly reduce.
The above is only several preferred implementation of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (10)
1. a pixel drive unit, it is characterized in that: comprise a plurality of pixel driver subelements and luminescent device, described pixel driver subelement comprises building-out capacitor and switching transistor, and described building-out capacitor discharges and recharges to drive described luminescent device under controlling at switching transistor.
2. pixel drive unit according to claim 1 is characterized in that:
The first end of described building-out capacitor is connected with the signal source voltage line, and the second end is connected with the drain electrode of described switching transistor and the anode tap of luminescent device, and the source electrode of switching transistor is connected with reference voltage line, and grid is connected with scan signal line.
3. pixel drive unit according to claim 1, it is characterized in that: described switching transistor is p type field effect transistor or n type field effect transistor.
4. pixel drive unit according to claim 1, it is characterized in that: described luminescent device is organic electroluminescent LED.
5. the driving method as the described pixel drive unit of any one in claim 1-4, it is characterized in that: described method comprises:
Reseting stage, signal source voltage line output electronegative potential, reference voltage line output noble potential; Scan signal line is opened described switching transistor, makes reference voltage line be loaded on the second end of building-out capacitor with reference to current potential;
Glow phase, signal source voltage line output noble potential, reference voltage line output electronegative potential; Scan signal line is closed described switching transistor, and the signal source voltage line is loaded on operating potential the first end of building-out capacitor; Building-out capacitor discharges the anode tap of electric charge to described luminescent device, makes described luminescent device luminous.
6. the driving method of pixel drive unit according to claim 5, it is characterized in that: comprise a plurality of reseting stages and a plurality of glow phase, described reseting stage and glow phase hocket.
7. the driving method of pixel drive unit according to claim 5, is characterized in that: comprise a reseting stage.
8. the driving method of pixel drive unit according to claim 5, it is characterized in that: described switching transistor is p type field effect transistor; At reseting stage, described scan signal line output electronegative potential, in order to open described switching transistor; In glow phase, described scan signal line output noble potential, in order to cut out described switching transistor.
9. the driving method of pixel drive unit according to claim 5, it is characterized in that: described switching transistor is n type field effect transistor; At reseting stage, described scan signal line output noble potential, in order to open described switching transistor; In glow phase, described scan signal line output electronegative potential, in order to close described switching transistor.
10. an image element circuit, it is characterized in that: comprise a plurality of pixel drive unit as described as any one in claim 1-4, also comprise time-sequence control module, described time-sequence control module connects described scan signal line, for the automatic sequential switching controls of each described scan signal line.
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| CN201310464199.9A CN103489406B (en) | 2013-10-08 | 2013-10-08 | A kind of pixel drive unit and driving method, image element circuit |
| PCT/CN2014/082407 WO2015051659A1 (en) | 2013-10-08 | 2014-07-17 | Pixel drive unit and drive method therefor, and pixel circuit |
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| CN201310464199.9A CN103489406B (en) | 2013-10-08 | 2013-10-08 | A kind of pixel drive unit and driving method, image element circuit |
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| WO2015051659A1 (en) * | 2013-10-08 | 2015-04-16 | 京东方科技集团股份有限公司 | Pixel drive unit and drive method therefor, and pixel circuit |
| CN112863438A (en) * | 2021-01-19 | 2021-05-28 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
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| CN112863438A (en) * | 2021-01-19 | 2021-05-28 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
Also Published As
| Publication number | Publication date |
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| WO2015051659A1 (en) | 2015-04-16 |
| CN103489406B (en) | 2015-11-25 |
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